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AW 50-42 Electronically Controlled Transmission http://www.motoralldata.com/alldata/MOTOR~V71595976~C44045~...

1 of 1 6/28/2008 1:32 AM

AW 50-42 Electronically Controlled Transmission http://www.motoralldata.com/alldata/MOTOR~V71595976~C44045~...

1 of 1 6/28/2008 1:33 AM

Motor / ALLDATA Online - 1994 Volvo 850 L5-2.4L VIN 55 B5254S ... http://www.motoralldata.com/alldata/MOTOR~V71595976~C44045~...

1 of 16 6/28/2008 1:34 AM

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1994 Volvo 850 L5-2.4L VIN 55 B5254S

Vehicle Level Transmission and Drivetrain Automatic Transmission/Transaxle Diagrams Electrical Diagrams AW 50-42 Automatic Transmission

AW 50-42 Automatic TransmissionNotes

AW 50-42 Electronically Controlled Transmission

Wiring Diagram

AW 50-42 Electronically Controlled Transmission


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Component Location

Component I.D. List

No. Component Name

1/1 Battery

2/1 Main headlight relay with bulb malfunction indicator

2/3 Regulator, DIM-DIP

2/4 Windshield wiper intermittent relay

2/5 Seatbelt reminder/key warning relay

2/7 Central lock/delayed courtesy lighting relay

2/11 Engine cooling tan relay

2/15 Relay, exhaust temperature sensor

2/16 Tailgate wiper intermittent relay


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2/22 A/C relay

2/23 Fuel pump relay

2/24 Fan relay, max.

2/28 Alarm relay

2/30 Overload relay X+

2/31 Overload relay 15+

2/32 Main relay fuel system

2/42 Combination relay ABS

2/43 Heated rear seat relay

2/44 Relay, electrically heated rear window/door mirrors

2/45 Relay, P-shift lock

2/47 Relay, deadlock setting

2/51 Speed warning

2/53 Air pump relay

2/60 Overload relay X+

3/1 Ignition switch

3/2 Light switch

3/3 Switch, turn signal/high and low beams

3/4 Controls, cruise control

3/6 Switch, hazard lights with flasher relay

3/8 Switch, el. heated rear window/door mirrors

3/9 Brake light switch

3/10 Backup (reversing) light switch

3/12 Switch, windshield wipers and washer

3/13 Switch, tailgate washer and wiper

3/25 Switch, power sunroof

3/37 Horn connectors

3/38 Contact, brake pedal

3/39 Contact, clutch pedal

3/47 Handbrake switch


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3/54 REC and A/C switch

3/55 NC panel lights

3/56 Heater fan switch

3/57 Climate control

3/58 Switch, rear fog light

3/59 Beam width control

3/61 Controls, trip computer

3/62 Alarm switch, hood

3/63 Program selector, automatic transmission

3/64 Switch for heated rear seat, left side

3/69 Switch for heated rear seat, right side

3/71 Transmission range selector indicator

3/72 Kick-down switch on throttle controls

3/74 Lock, left front

3/75 Lock, right front

3/76 Lock, left rear

3/77 Lock, right rear

3/78 Lock, boot

3/85 Power window switch, left rear door

3/86 Power window switch, right rear door

3/87 Switch, power door mirror, left side

3/88 Switch, power door mirror, right side

3/89 Control module, left seat

3/91 Switch, heated left seat

3/92 Switch, heater right seat

3/93 Seat belt lock, left seat

3/94 Seat belt lock, right seat

3/95 Switch, TRACS

3/97 Switch, auto-down relay, power window

4/3 Control module, cruise control


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4/4 Rheostat

4/5 Safety circuit SRS

4/9 SRS sensor module

4/10 Control module EZK (DI) ignition system

4/15 DI power stage and ignition coil

4/16 ABS control module

4/18 Control module, oil level sensor

4/19 Remote control module, central lock/anti-theft alarm

4/28 Control module, AW 50-42 automatic transmission

4/29 Control module, left seat

4/30 Control module, ECC

4/31 Power module, heater fan

4/33 Control module, power sunroof

4/34 Voltage regulator, 8 volts

4/35 Voltage regulator, 5 volts

4/36 Combined instrument microprocessor

4/37 Control module, right seat

4/41 Control module, Fenix 5.2 MFI

4/44 DI power stage and ignition coil

4/45 Control module, LH 3.2 MFI

4/46 Control module, Motronic 4.3 MFI

4/47 Ignition coil, Fenix 5.2 MFI

4/48 Ignition power stage, Fenix 5.2 MFI

5/1 Combined instrument

5/2 Clock module

5/3 Ambient temperature/clock module

5/4 Trip computer

6/1 Windshield wiper motor

6/2 Washer motor front

6/3 Right headlight wiper motor


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6/4 Left headlight wiper motor

6/15 Power sunroof motor

6/24 Cruise control vacuum pump

6/25 Starter motor

6/26 Generator

6/28 Heater fan

6/29 Engine cooling fan

6/30 Tailgate washer motor

6/31 Fuel pump

6/32 Tailgate wiper motor

6/33 Fuel level sensor

6/34 Power antenna

6/35 Parking heater

6/37 Central lock motor, tank cap

6/38 Beam width control left actuator

6/39 Beam width control right actuator

6/45 Servo motor, temperature shutter, driver's side

6/46 Servo motor, temperature shutter, passenger's side

6/47 Servo motor, floor and defroster shutter

6/48 Servo motor, recirculation shutter

6/49 Servo motor, ventilation shutter

6/50 Motor, left seat backrest

6/51 Motor, up/down front edge of left seat

6/52 Motor, up/down rear edge of left seat

6/53 Motor, fore/aft left seat

6/54 Air pump

6/58 Power window motor, left front door

6/59 Power window motor, left rear door

6/60 Power window motor, right front door

6/61 Power window motor, right rear door


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6/62 Power door mirror, left side

6/63 Power door mirror, right side

7/1 Bulb malfunction indicator, rear

7/4 Brake fluid level sensor

7/5 Washer fluid level sensor

7/6 Oil pressure sensor

7/11 Ambient temperature sensor, ECC

7/15 Heated oxygen sensor (HO2S) (Lambdasond), front

7/16 Engine temperature sensor

7/17 Mass air flow (MAF) sensor

7/21 Camshaft position sensor (CMP)

7/23 Knock sensor (KS), rear

7/24 Knock sensor (KS), front

7/25 Pulse sensor

7/31 ABS sensor, left front

7/32 ABS sensor, right front

7/33 Speedometer sensor

7/35 Oil level sensor

7/37 Temperature sensor, EGR

7/43 Thermostat, left seat

7/44 Thermostat, right seat

7/47 PTC resistor, pre-heater

7/50 A/C pressure sensor

7/53 Pressostat, A/C

7/54 Throttle position (TP) sensor

7/55 Thermoelement, 3-way catalytic converter (TWO)

7/56 Sensor ABS left rear

7/57 Sensor ABS right rear

7/58 Pedal sensor ABS

7/59 Temperature sensor, left duct


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7/60 Temperature sensor, right duct

7/64 Cabin temperature sensor, driver's side

7/65 Cabin temperature sensor, passenger's side

7/66 Rear seat thermostat, left side

7/67 Rear seat thermostat, right side

7/68 Solar sensor ECC/indication LED - anti-theft alarm

7/69 Ambient temperature sensor, trip computer

7/73 Coolant level sensor

7/77 Intake air temperature sensor (IAT sensor)

7/79 Accelerometer

7/81 Pressure sensor, intake manifold

7/82 Heated oxygen sensor (HO2S) (Lambdasond), rear

7/83 High-pressure sensor, A/C

8/3 Solenoid coupling A/C

8/5 IAC idling valve

8/6-10 Injectors

8/15 Hydraulic unit ABS

8/17 EGR converter

8/30 Steering wheel module SRS

8/31 SRS passenger module

8/33 Igniter, left belt tensioner

8/34 Igniter, right belt tensioner

8/36 Solenoid, P-shift lock

8/43 Solenoid, aux. air intake

8/45 Solenoid, variable intake manifold

9/1 Cigarette lighter

9/2 Heated rear window

9/3 Backrest heater pad,left seat

9/4 Backrest heater pad, right seat

9/5 Seat element, left seat


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9/6 Seat element, right seat

9/8 Seat element, left rear seat

9/9 Backrest element, left rear seat

9/10 Seat element, right rear seat

9/11 Backrest element, right rear seat

10/1 Left front light

10/2 Right front light

10/9 Left parking light and turn signal, front

10/10 Right parking light and turn signal, front

10/11 Left parking light, front

10/12 Right parking light, front

10/13 Left turn signal, front

10/14 Right turn signal, front

10/15 Left side indicator light

10/16 Right side indicator light

10/17 Right tail light

10/18 Left tail light

10/19 High-level brake light

10/20 Number plate light

10/22 Inside light, ceiling

10/24 Trunk lighting

10/26 Reading light, left rear

10/27 Reading light, right rear

10/29 Glove box lighting

10/30 Warning lamp, left front door

10/31 Warning lamp, right front door

10/32 Warning lamp, left rear door

10/33 Warning lamp, right rear door

10/37 Cigarette lighter illumination

10/40 Gear selector light


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10/43 Right brake light

10/44 Right parking light, rear

10/45 Right parking/tail light

10/46 Right rear fog light

10/47 Lamp, right turn signal, rear

10/48 Right back-up light

10/50 Left brake light

10/51 Left parking light rear

10/52 Left parking/tail light

10/53 Left rear fog light

10/54 Lamp, left turn signal, rear

10/55 Left back-up light

10/64 Right high beam

10/66 Right low beam

10/68 Left high beam

10/70 Left low beam

10/72 Ashtray lighting, front

10/74 Indicator lamp, exhaust gas temperature

10/77 Indicator lamp, SRS

10/79 Indicator lamp, winter program and low gear (automatic transmission)

10/82 Indicator lamp, ABS

10/83 Indicator lamp, hand brake

10/84 Brake warning lamp

10/85 Warning light, high beam

10/86 Oil pressure warning lamp

10/87 Indicator lamp, charging

10/88 Indicator light, bulb malfunction indicator

10/89 Indicator lamp, rear tog lights

10/90 Washer level warning lamp

10/91 Service reminder indicator


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10/92 Indicator lamp, trailer

10/94 Indicator lamp, right turn signal

10/95 Indicator lamp, left turn signal

10/96 Instrument lighting

10/97 Entry lighting, driver's side

10/98 Ashtray lighting, rear

10/102 Entry lighting, passenger side

10/1O5 Fuel level warning lamp

10/106 Check engine (malfunction indicator lamp) warning lamp

10/107 Indicator lamp, TRACS

10/108 Extra brake light, spoiler

10/110 Coolant level warning lamp

10/113 Alarm warning LED

10/114 Vanity mirror lighting, left side

10/115 Vanity mirror lighting, right side

10/117 Indicator lamp oil level

11/1-40 Fuses

15/2 30 rail in central electrical unit

15/4 15I rail in central electrical unit

15/8 X rail in central electrical unit

16/1 Radio

16/3 Loudspeaker right front door

16/4 Loudspeaker left front door

16/5 Loudspeaker right rear door

16/6 Loudspeaker left rear door

16/7 Loudspeaker, instrument panel, right side

16/8 Loudspeaker, instrument panel, left side

16/9 Antenna

16/10 Horn 1

16/11 Horn 2


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16/16 Antenna booster

16/17 Loudspeaker, rear shelf/D-post, left side

16/18 Loudspeaker, rear shelf/D-post, right side

16/19 Alarm signal

17/1 Service socket for starter motor

17/7 OBD (Diagnostic) socket A

17/10 OBD (Diagnostic) socket B

17/13 OBDII (Diagnostic) socket

18/4 Contact reel, SRS

19/1 Temperature gauge

19/2 Tachometer

19/3 Speedometer

19/5 Fuel gauge

19/6 Exciter, tachometer

19/7 Exciter, speedometer, temperature gauge, fuel gauge

20/2 Distributor

20/3-7 Spark plugs

20/18 Resistor, heater fan

23/0 Branching point, 30+ supply

23/3 Branching point, injectors -

23/6 Branching point, fuel system main relay

23/7 Branching point, fusible link

23/8 Branching point, signal ground

23/9 Branching point, signal ground knock sensor (KS)

23/10 Branching point, +5V supply

23/11 Branching point, injectors +

23/13 Branching point, 30+ main relay fuel system

23/100 Branching point, ground 31/44 engine compartment

23/101 Branching point, ground 31/44 engine compartment

23/104 Branching point, horn


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23/105 Branching point, X+ supply

23/107 Branching point, headlight wiper motors

23/201 Branching point, brake light

23/203 Branching point, ground 31/50, central el. unit


23/207 Branching point, left turn signal

23/208 Branching point, right turn signal

23/209 Branching point, high pressure sensor, A/C

23/213 Branching point, OBD (Diagnostic) socket

23/214 Branching point, OBD (Diagnostic) socket

23/300 Branching point, rheostat

23/301 Branching point, ground, instr./contr. lighting 31/50 centr. el. unit


23/303 Branching point, heater fan, 4th speed

23/304 Branching point, ground 31/15 A-post passenger's side via 23/416

23/305 Branching point, X+ supply, A/C

23/306 Branching point, signal ground servo motors, cabin temperature sensor, ECC

23/307 Branching point, supply +5V servo motors ECC 23/308 Branching point, signal ground, temperature sensor ducts, solar sensor ECC

23/309 Branching point 30+ supply ECC

23/400 Branching point, central lock unlocking M+

23/401 Branching point, central lock locking M

23/405 Branching point, ground 31/7 A-post driver's side

23/408 Branching point, central lock unlocking M+

23/409 Branching point, central lock locking M

23/410 Branching point, open-door warning


23/412 Branching point, X+ supply

23/414 Branching point, rheostat


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23/416 Branching point, ground, 31/15 A-post passenger's side

23/417 Branching point, ground 31/11, trunk left side

23/502 Branching point, ground, instr. lighting/ power door mirrors / selector aut. transmission

23/503 Branching point, supply, seat heat/power door mirrors

23/601 Branching point, tailgate/trunk, ground 31/11, trunk left side via 23/417

24/1 Connector, 14-pole Instrument panel harness - Firewall harness

24/2 Connector, 53-pole Engine compartment harness - Firewall harness

24/3 LHD cars: Connector, pos. 26-53 in 53-poleRHD cars: Connector, 53-poleFirewall harness- Door sill harness, left

24/4 Connector, pos. 1-37 in 53-pole Firewall harness - Door sill harness, right

24/5 Connector, 24-pole Firewall harness - Left front door harness

24/6 Connector, 24-pole Firewall harness - Right front door harness

24/7 Connector, 14-pole Firewall harness - Tunnel harness

24/9 Connector, 4-pole Firewall harness - Ceiling harness

24/10 Connector, 2-pole Firewall harness - heater fan / A/C unit

24/11 Connector, 10-pole Firewall harness - A1C unit

24/12 Connector, 4-pole Firewall harness - heater fan / A/C unit

24/13 Connector, 53-pole Engine compartment harness - Instrument panel harness

24/14 Connector, pos. 1-25 in 53-pole Engine compartment harness - Door sill harness, let

24/15 Connector, 14-pole Engine compartment harness - Engine harness

24/16 Connector, 26-pole Engine compartment harness - Front harness

24/17 Connector, 11-pole Door sill harness, left - Left rear door harness

24/18 Connector, 11-pole Door sill harness, right - Right rear door harness

24/19 Connector, 4-pole Door sill harness, right - Rear wheel sensor harness

24/20 Connector, 4-pole Firewall harness - Power sunroof harness

24/21 Connector, 6-pole Door sill harness, left - left seat

24/22 Connector, 6-pole Door sill harness, right - right seat

24/25 Connector, 14-pole Door sill harness, left - trunk harness


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24/26 Connector, 2-pole Firewall harness - belt tensioner igniter harness, left side

24/27 Connector, 2-pole Firewall harness - belt tensioner igniter harness, right side

24/29 Connector, 2-pole at firewall

24/30 Connector, 2-pole Engine compartment harness thermoelement harness, TWC

24/33 Connector, 2-pole Firewall harness - passenger module harness

24/34 Connector pos. 38-53 in 53-pole Engine compartment harness - Firewall harness

24/35 Connector, 8-pole, accessories

24/35A Connector 8-pole accessories

24/35B Connector 1-pole accessories

24/37 Connector, 6-pole Firewall harness - switch harness heated rear seat

24/42 Connector, 2-pole, accessories

31/4 Ground point, engine (ground connection battery - engine)

31/7 Ground point, A-post driver's side

31/11 Ground point, trunk, left side

31/12 Ground point, trunk, right side

31/15 Ground point, A-post passenger's side

31/32 Ground point on engine (power ground)

31/33 Ground point on engine (signal ground)

31/44 Ground point, engine compartment (ground connection battery - body)

31/47 Ground point, left cross member

31/48 Ground point, right cross member

31/50 Ground point, central electrical unit (power ground)

31/51 Ground point, central electrical unit (signal ground)

31/52 Ground point, DI power stage and ignition coil

31/55 Ground point, engine cooling fan

31/65 Ground point, steering column

C/BA Connector, 2-pole, at fuel pump

C/BB Connector, 2-pole, fuel gauge


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C/BC Connector, 4-pole, power antenna/booster

C/CE Connector, 2-pole, heated left seat

C/CF Connector, 2-pole, heated left seat

C/CG Connector, 2-pole, heated right seat

C/CH Connector, 2-pole, heated right seat

C/CJ Connector, 6-pole, cruise control

C/CK Connector 14-pole, power windows

C/CL Connector, 6-pole, tailgate wash/wipe

C/CM Connector, 2-pole, heated rear seat, left side

C/CN Connector, 2-pole, heated rear seat, left side

C/CP Connector, 2-pole, heated rear seat, right side

C/CQ Connector, 2-pole, heated rear seat, right side

C/EA Connector, 1-pole, engine cooling fan

C/EB Connector, 4-pole, high pressure sensor, A/C

C/EC Connector, 1-pole, solenoid switch A/C

C/ED Connector, 15-pole, ABS

C/EG Connector, 2-pole, engine coolant temperature (ECT)

C/EH Connector, 3-pole, camshaft position sensor (CMP)

C/EJ Connector, 2-pole, impulse sensor

C/EK Connector, 2-pole, windshield wiper motor

C/EL Connector, 3-pole, windshield wiper motor

C/EM Connector, 2-pole at tunnel

C/EN Connector, 2-pole, EGR temp. sensor

C/EP Connector, 4-pole, heated oxygen sensor (HO2S) (Lambdasond), front

C/EQ Connector, 4-pole, heated oxygen sensor (HO2S) (Lambdasond), rear

K/1 Relay, auto-down power window

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